AWE Tuning 18-19 BMW F90 M5 Non-Resonated Performance Mid PipesPerformance Mid Pipes: The Performance Mid Pipes replace the factory mid section with a 3 stainless steel X pipe, mating to the factory Axle Back. Important fitment notes: Pairing AWE's Performance Mid Pipes to the factory exhaust will require cutting the factory mid pipe. Upgrading options: Equipping the Performance Mid Pipes or an Axle Back with intentions to add another section later? Thats a good thing. We've engineered the AWE Exhaust Suite for